Spectral Properties and Photochromic Characteristics of Spiropyran Dyes

Kai Hua Shen, Jian Guo Han, Gang Zhang, Dong Hoon Choi

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Abstract

The bis-benzospiropyran (BBSP) and nitro-substituted indoline spirobenzopyrans(SBP) were prepared by following a simple procedure. The reaction mechanism of synthesizing bis-benzospiropyran is discussed. A comparative analysis of the spectral and photochromic properties between SBP and BBSP was carried out with the aid of a PMMA film. The results indicate that chemical structures and UV irradiation played an important role in the spectral and photochromic properties of SBP and BBSP, which would readily affect λmax of the colored forms and the reversibility. The IR spectra and 1H NMR spectra of these compounds are used to interpret the photochromic phenomena under different UV irradiations and determine the configurations of SBP and BBSP.

Original languageEnglish
Pages (from-to)505-509
Number of pages5
JournalChemical Research in Chinese Universities
Volume22
Issue number4
DOIs
Publication statusPublished - 2006 Jul 1
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)

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